Question about coordinate math

Question about coordinate math - Printable Version

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Question about coordinate math - gtaplayer1 - 25.01.2014

Hello,

I have downloaded a list of zones.inc from https://sampforum.blast.hk/showthread.php?tid=24664, but the download link for the actaul script is down. So I need to make some functions to loop through the arrays and compare the coordinates to return the name of the zone the player is in.

I'm not sure how to check if a 3D coordinate is within a 3D area.

The coordinates look like this

Код:

	struct zoneinfo
	{
		char zone_name[27];
		float zone_minx;
		float miny;
		float zone_minz;
		float zone_maxx;
		float zone_maxy;
		float zone_maxz;
	};

	zoneinfo zones[] = {
		{ "'The Big Ear'", -410.00, 1403.30, -3.00, -137.90, 1681.20, 200.00 },
		{ "Aldea Malvada", -1372.10, 2498.50, 0.00, -1277.50, 2615.30, 200.00 },
		{ "Angel Pine", -2324.90, -2584.20, -6.10, -1964.20, -2212.10, 200.00 },
		{ "Arco del Oeste", -901.10, 2221.80, 0.00, -592.00, 2571.90, 200.00 },
		{ "Avispa Country Club", -2646.40, -355.40, 0.00, -2270.00, -222.50, 200.00 },
		{ "Avispa Country Club", -2831.80, -430.20, -6.10, -2646.40, -222.50, 200.00 },
		{ "Avispa Country Club", -2361.50, -417.10, 0.00, -2270.00, -355.40, 200.00 },

...
};


	struct zareainfo
	{
		char zarea_name[27];
		float zarea_minx;
		float zarea_miny;
		float zarea_minz;
		float zarea_maxx;
		float zarea_maxy;
		float zarea_maxz;
	};


	zareainfo zarea[] = {

		// Main zarea
		{ "Los Santos", 44.60, -2892.90, -242.90, 2997.00, -768.00, 900.00 },
		{ "Las Venturas", 869.40, 596.30, -242.90, 2997.00, 2994.00, 900.00 },
		{ "Bone County", -479.00, 596.50, -242.90, 869.00, 2993.00, 900.00 },
		{ "Tierra Robada", -2997.40, 1659.60, -242.90, -481.50, 2992.00, 900.00 },
		{ "Tierra Robada", -1213.90, 596.30, -242.90, -481.50, 1659.60, 900.00 },
		{ "San Fierro", -2997.40, -1115.50, -242.90, -1213.90, 1659.60, 900.00 },
		{ "Red County", -1213.90, -768.00, -242.90, 2997.00, 596.30, 900.00 },
		{ "Flint County", -1213.90, -2892.90, -242.90, 44.60, -768.00, 900.00 },
		{ "Whetstone", -2997.40, -2892.90, -242.90, -1213.90, -1115.50, 900.00 }
	};

I imagine it will be something like this:

Код:

		float fPos[3];
		GetPlayerPos(playerid, &fPos[0], &fPos[1], &fPos[2]);

		for(int i = 0; i < ArraySize(zones); i++)
		{
			if(zones[i].minx >= fPos[0] && zones[i].miny <= fPos[1])
				return zones[i].name;
		}

but i'm not sure how to do it EXACTLY.

Alternatively, if someone can recommend a good script designed for this purpose that would be great too.

Thanks.

Re: Question about coordinate math - Scottas - 25.01.2014

take a look at another zones script https://sampforum.blast.hk/showthread.php?tid=27598

Re: Question about coordinate math - gtaplayer1 - 25.01.2014

Quote:

Originally Posted by Scottas

take a look at another zones script https://sampforum.blast.hk/showthread.php?tid=27598

Ah yeah I figured it out right after I posted this. I realized it's really obvious.

if anyone sees this and needs to know

Код:

if(fX >= minx && fX <= maxx && fY >= miny && fY <= maxy && fZ >= minz && fZ <= maxz) return true;